James kelren



UNITED STATES PATENT OFFICE.

JAMES KELREN, OF CANTON, MASSACHUSETTS, ASSIGNOR TO IIIMSELF AND GEO.BANKS.

MACHINE FOR MAKING RAILWAY-CHAIRS.

Specification of Letters Patent No. 13,313, dated July 24, 1855.

' of Massachusetts, have invented an Improved Machine to be Used forMaking WYrought-Metal Chairs for Railway-Cars; and I do hereby declarethat the same is fully described and represented in the followingspecification and the accompanying drawings, letters, figures, andreferences thereof.

Of said drawings Figure 1, denotes a top view of the said machine; Fig.2, is a front elevation of it; Fig. 3, is a vertical and longitudinalsection of it, the same being taken through the bending dies and theirtoggles; Fig. t, is a central, vert-ical and 'transverse section of themachine; Fig. 5,

is a side view of a wrought iron chair of the kind made by such machine;Fig. 6, is a top view of it; Fig. 7, is a side view of it as it appearsbefore being subjec-ted to the action of the machine, it being rolledinto such shape by means of fluted or grooved rollers.

In the process of making wrought iron chairs, a bar of metal is firstrolled into the shape of which Fig. 7, exhibits a side view, that is t0say, into the form of a flat plate, a, having two lips, Z), c, elevatedperpendicularly on it.

The peculiar purpose of the machine of which my invention forms a partis not only to bend each of these lips from a vertical position downinto that exhibited in Fig. 5, but to punch or form the holes, throughwhich the spikes are passed for fastening the chair to a wooden sleeper.

In Figs. 3, and 4, of the drawings above mentioned A, represents amovable metallic bed, block, or anvil for receiving the chair blank andsupporting itl while its lips are being bent down upon a former, B,which is attached to the carriage or bed and projects over the same asseen in the said figures. The said anvil or block, A, slidestransversely upon the bed plate C, of the machine and when in positionto receive a chair blank extends over an opening or passage D, madedownward through said base plate. said anvil or carriage A, the chair(which is shown in Figs. 2, 3, and t, by red lines) will be drawnagainst the inner surface of one 0f two horizontal or parallel rails E,E, and discharged from the carriage and its During the backward movementof former B, and by gravity will be caused to fall out of the machineand through the hole D.

F, F, are the bending dies or blocks, they being arranged and made toslide either toward or away from one another between two rails E, E.Each of the dies has a set of toggles or progressive levers Gr G,connecting it with the adjacent part, I'I, of the frame work and with apitman or connecting rod T, jointed to and depending from a movablecross head or bar K. A reciprocating, rectilinear movement is impartedto such cross head by a connecting rod, L, and a crank pin, M, arrangedand applied together to the cross head and a gear, N, as seen in thedrawings, such. gear being rotated by a pinion, O, carried by a drivingshaft P. The shaft, Q, of the gear, N, has a crank, R, which works inthe horizontal groove, d, of the head, e, of a vertical slide, S,arranged and applied to the frame as seen in Figs. l, and ll. A bentlever T, disposed below the slide is connected both to it and thecarriage or bed A, by means of connecting rods, iz., z'.

The crank R, simply elevates the slide S, while the said crank is risingthrough the upper semicircle or half of its rotary movement, the crankpassing and remaining entirely out of the groove of the T piece, duringthe time it is making the lower half of its path of rotation. hile theslide, S, is being elevated, the anvil or carriage, A, with its former,B, will not only be drawn backward, but the bending dies, F, F, will bemoved away or apart from one another. The return movement of thecarriage and benders is effected by the rod, S, and is arrested a shorttime before the bending dies are moved into contact, such time beingsutlicient to enable a chair blank to be placed upon the bed anddirectly underneath the former, B, as seen in Fig. 2. The bed havingbeen so applied with a chair blank, the dies during their furtherapproach will be pressed against the lips of the blank and will forceand turn them down upon the said former. Immediately after this hastaken place, machinery to be hereinafter described is put in operationso as to punch the spike holes through the chair. l

Each of the bending dies F, F, carries one or more punches, U. `Each ofsaid punches works or slides vertically through the die, and when in itshighest position is supported on a helical spring 7c, the head, Z, ofthe punch resting on the spring as seen in Fig. 4. Above each of thepunches is a driver or depressor, V, which is fastened to and extendsfrom the cross head, K, and carries upon a fulcrum or arm, m, (extendedfrom it as seen in Fig. 4) a horizontal lever or lifter, 7, a top viewof-which is given in F ig. 8. The longer arm of said lifter is bornetoward an upright or stationary cam, X, by means of a spring, a, Suchcam is so formed as not only to allow the lifter to pass under the headof its punch, while the punch is being driven downward, but to enable it(the said lifter) to elevate the punch out of the chair during a part ofthe ascent of the lifter. The cam is also so made as to discharge thelifter from its hold on the punch, after the latter has beensufficiently elevated. The object of the spring of each punch is nottoelevate the punch, but sim- I do not claim the combination of bending 30dies a bed and former, but

IV hat I claim is* Combining with each of the punches and its driver alifter and mechanism for operating such lifter as specified, such punchbeing applied to the bending die and supported on a spring as explained.

In testimony whereof I have hereunto set my signature this sixteenth dayof May,

JAMES KELREN. IVitnesses R. H. EDDY, F. P.' HALE, Jr.

